Vaporizer



July 24, 1956 F. slBERT VAPORIZER Filed Dec. 5, 1952 INVENToR. @w22/Y 4526er/ ATYURNEY United States Patent O VAPORIZER Frank Sibert, East Orange, N. I.

Application December 5, 1952, Serial No. 324,330

1 Claim. (Cl. 219-44) My invention relates generally to a vaporizer and specically to vaporizers tending to disseminate into the air, materials having insecticidal or germicidal properties.

It is among the objects of my invention to provide a vaporizer which will disseminate insecticides or germicides into the atmosphere and minimize the tendency of such materials to condense or crystallize on areas of the vaporizer immediately adjacent to the area in which such materials are vaporized.

It is a further object of my invention to provide a vaporizer which will provide a steady uniform ow of heat to the material to be vaporized.

It is a further object of my invention to provide a vaporizer which is simple in form, relatively inexpensive, easy to construct and maintain and durable. These objects and advantages as well as other objects and advantages may be achieved by the device illustrated in the drawing in which:

Figure l is a side elevational view with the wall exploded away to show the internal construction;

Figure 2 is a View of the heating unit and insulating pad;

Figure 3 is a top view of the cup;

Figure 4 is a side view of the insert;

Figure 5 is a top view of the vaporizer with the cup removed; and

Figure 6 is a side cross-sectional view taken on the line 6-6 in Figure 1.

Referring now to the drawings in detail, my vaporizer has a cup-shaped upper portion 11. The top of this cup 11 is provided with an annular external ange 12. The cup 11 is oval, and has an oval shaped internal cavity 13 which is open at the top. The floor 14 is flat. The bottom of the cup 11 is provided with an oval cavity 15. At each end of this cavity 15, there is an extended portion 16 extending downward from the roof of the cavity 15. The base 17 of my vaporizer is also oval and has a downwardly extending tubular handle 18. On the inside of the base 17 and on each end thereof, the oval internal form of the base 17 is interrupted by extended portions 19, 19. These extended portions 19, 19 are provided with central notches 20 which define seats for a heating i' element support hereinafter referred to. Each of the notches 20, 20 serves to pivotally mount retainers 21, 21 which are held in place by a screw 22, 22. A heat insulating pad 23, preferably of asbestos, is positioned in the base 17. A heating element support 24 is positioned on top of the pad 23. This support 24 is preferably formed of a ceramic composition and is transversely wound with resistance wire 25. An eyelet 26 is mounted on each end of the support 24 and it is to these eyelets 26 that the ends of the resistance wire are attached. A connecting cord 27 is introduced through the tubular base and through notches 28 formed on the ends of the pad 23. The heating element support 24 is provided with extended end portions 29 to which the connecting wires 27 are fastened to the eyelets 26 in any suitable manner. The pad 23 and the heating element support 24 are 2,756,322 Patented July 24, 1956 positioned in the seats 20 in the inside of the base 17 and the, retaining arms 21, 21 pivot over to secure them in place. It will be noted that when the cup 11 andthe base 17 are connected together by the cooperative engagement of their respective -anged edges, a space exists between the resistance wire 25 and the roof of the cavity 15. The resistance wire support 24 may have applied to it (over the resistance wires 25), a suitable heat resisting coating 38 (which may be ceramic in nature) to retain the resistance wires 25 spaced from each other and in place upon the support 24.

The cup 11 has a metal insert 30. This metal insert 30 is provided with an external radial flange 31 at the top, a plurality of openings 32 at the bottom, and outwardly extending lugs 33 at the top of each of the openings 32. Since the ilange 31 of the insert 30, substantially closes the space between the insert 30 and the internal cavity in the cup 11, the heated air trapped between the internal walls of the cup 11 and the insert 30 is retained therein. But little circulation of air is possible. The heated air serves to maintain the insert 30 at a relatively high temperature. The insert 30 is preferably formed of a metal which is an excellent heat exchange medium. The metal insert 30 will thereby be maintained at a relatively high temperature. Thus, any crystalline matter deposited in the cup 11 will not tend to crawl up the sides of the cup and recrystallize or condense into crystals, since the insert will be maintained at a relatively high temperature.

A mounting bracket 34 is provided. This mounting bracket is provided with an upper vertical portion and a lower horizontal portion. The horizontal portion has a cut-out area 35 in which the handle 18 may be inserted. The bracket 34 is attached to the base 17 by rivets 36 which enter to holes 37.

The operation of my vaporizer is as follows: a suitable current is applied to the resistance wires 25. A quantity of material is deposited in the cup 11 and the heat generated by the resistance wires causes vaporization. The insert 3i) remains relatively hot, thereby discouraging condensation and crystallization of the material thereon. The material remains on the bottom of the cup until it is completely vaporized. No material is deposited on the side of the cup. Material vaporized may be insecticidal, medicinal, vasoconstricting, germicidal, etc.

While I prefer a ilat resistance wire support, a circular resistance wire support may also be used. Plastic materials are preferred for the cup 11 and base 17.

The foregoing description is merely intended to illustrate an embodiment of the invention. The component parts have been shown and described. They each may have substitutes which may perform a substantially similar function; such substitutes may be known as proper substitutes for the said components and may have actually been known or invented before the present invention; these substitutes are contemplated as being within the scope of the appended claim, although they are not specifically catalogued herein.

I claim:

A vaporizer comprising a cup-shaped top portion of a housing, an insert of heat conducting material adapted to iit in the cup, a top peripheral ange on the insert in contact with the interior of the cup at the top thereof, said insert being disposed in spaced relation with the side wall of the cup, the bottom edge of the insert in contact with the bottom of the cup-shaped top portion, and a plurality of lugs extending outwardly from the bottom of the insert and defining openings therein, a hollow bottom portion of a housing engageable with the top portion, a rectangular support in the bottom portion, seats for the rectangular support dened on the walls of the bottom ice portion, extended ends on the support positioned on the seats, means for securing the support to the bottom p01'- tion, resistance Wire Wound on the support, a tubular handle on the bottom portion, lead Wires entering through the tubular handle, and connected to the resistance Wires, and heat insulating means disposed between the bottom of the support and the bottom portion.

586,768 Hill July 20, 1897 Bell ec. 10,1907 Weidlich Apr. 21, 1925 King Apr. 17, 1928 Strite Aug. 6, 1929 Rubsam May 19, 1931 Smith Nov. 27, 1934 Buehler Feb. 6, 1951 Christopher Feb. 13, 1951 Robinson June 3, 1952 

